Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Common Stock Issued [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Beginning Balance at Dec. 31, 2017	$ 339	$ 2,004	$ 10,352	$ 12	$ 12,707
Beginning Balance, Shares at Dec. 31, 2017	3,395,521
Other comprehensive income (loss)				13	13
Stock-based compensation expense		15			15
Change in accounting policy			(7)	7	0
Net income (loss)			(10)		(10)
Ending Balance at Dec. 31, 2018	$ 339	2,019	10,335	32	12,725
Ending Balance, Shares at Dec. 31, 2018	3,395,521
Other comprehensive income (loss)				(32)	(32)
Stock-based compensation expense		11			11
Net income (loss)			187		187
Ending Balance at Dec. 31, 2019	$ 339	$ 2,030	$ 10,522	$ 0	$ 12,891
Ending Balance, Shares at Dec. 31, 2019	3,395,521